/Engine/Plugins/Importers/USDImporter/Source/USDUtilities/Public/USDConversionUtils.h
Copies flattened versions of the input prims onto the clipboard stage. These copied prims can then be pasted with PastePrims.
True if we managed to copy
namespace UsdUtils { bool UsdUtils::CopyPrims ( const [TArray](API\Runtime\Core\Containers\TArray)< [UE::FUsdPrim](API\Plugins\UnrealUSDWrapper\UsdWrappers\FUsdPrim) > & Prims ) }